101 reputation
2
bio website valedon.co.uk
location Derbyshire, United Kingdom
age 59
visits member for 2 years, 1 month
seen Jan 31 at 14:13

I've worked in IT for about 30 years (since 1980) starting when I was doing research at university and got the role of Computer Manager in the Physics department. I've been at IT Manager for much of my career, but in recent years have done more software development (SQLserver, VB.Net, ASP, etc) than IT administration. I've also been a Poject Manager (Prince 2) and a software development manager.

Most of my professional work has been with Microsoft operating systems (currently Windows 8 at home) but I've kept up an interest in Linux throughout.

At work, I currently develop web applications using C#, jQuery/javascript and MS SQL.

At home, in additon to several Windows laptops, I currently maintain 2 systems running Linux. Both is running Debian + MythTV; one is used a Personal Video Recorder and general filestore (it has about 5Tb of disks attached). The other just acts as a player and alternaed betweenDeian, for MythTV, and Windows 7, for iPlayer, BlnkBox, etc; it connects only by a WiFi connection which is configure to start before login so it also holds the essential config backup from the main server. Both use HD TVs as monitors. In the past, I've configured my home systems to use soft RAID (md devices) and currently have the PVR system using LVM as it allows partitions to span drives (and is easily reconfigurable).

I'd like to do a bit more with Android as I have a couple of tablets - my phones are a Blackberry and an iPhone! - and also get back to my Astronomy hobby (I haven't had my telescope out for a couple of year!

Married, with several cats, but no kids!


Sep
25
comment What are imaginary numbers?
You seem to have been persuaded to go well beyond the question and into the realms of hypercomplex numbers. While everyone else seems to have enjoyed the comments & extensions, I haven't seen if @SachinKainth found the answer helpful!
Sep
21
comment What are imaginary numbers?
@CliveN Possiby not. Your answer is probably the clearest brief history of the evolution of number systems I've seen. However you did mention that the 'number plane' ... contains our previously held 'number line' and that would have been a good place to mention it.
Sep
20
comment What are imaginary numbers?
+1 but you didn't complete the definition that the imaginary number line as simply the axis orthogonal to the real number line in the complex number plane so that every complex number can be expressed as the sum of a real number and an imaginary number.
Sep
20
awarded  Supporter
Aug
20
awarded  Autobiographer
Aug
1
comment Solving $5^n > 4,000,000$ without a calculator
I remember log10(2) as 0.3010 and hence log10(5) is 0.6990 so 0.3 and 0.7 are much closer than "within a few %"!